any help would be apprieciated

It has been 12 years since I have taken an algrebra class, it is taking a while to get back into it.

The question I have is: At the north campus of performing arts school, 10% of the students are Music majors. At the south campus, 90% of the student are Music majors. The campuses are merged into one east campus. If 42% of the 1000 students at the east campus are Music majors, How many students did the nort and saouth campuses have before the merger?

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The question I have is: At the north campus of performing arts school, 10% of the students are Music majors. At the south campus, 90% of the student are Music majors. The campuses are merged into one east campus. If 42% of the 1000 students at the east campus are Music majors, How many students did the nort and saouth campuses have before the merger?

Thank you in advance if you are able to help!

Let x denote the number of students at the NC and y the number of students at the SC.